Question

When temperature increases, the fermi energy of an intrinsic semiconductor *​

Answer 1

Answer:

As temperature increases the intrinsic holes dominate the acceptor holes. Hence the number of intrinsic carriers in the conduction band and in the valence band become nearly equal at high temperature. The fermi level EFp gradually shifts upwards to maintain the balance of carrier density above and below it

Answer 2

Answer:

at ok the Femi level E_(fn)lies between the conduction band and the donor level.As temperature increases more and more electrons shift to the conduction band leaving behind equal number of holes in the valence band.These electron hole pairs are intrinsic carriers.